A Project done by our students

1. DEGRADATION OF THE RIVERINE ECOSYSTEM
OF NAIKA RIVER
Ryan Daimari & Paran Swargiary
Guide Teacher: Dhrubajyoti Sarmah
Arunodoi Academy, Tangla
Class 9

2. INTRODUCTION
The river is the rudimentary lifeline of the ecosystem and ultimately the important
facet of the prominent life forms of the land lock vicinities. Many successful
civilizations took place nearby the rivers like Nile. In the modern days too, cities like
London also flourished on the bank of river Thames.
A river has the potential to bring life with it and also create a whole new ecosystem at
its will. So, it becomes our obligation to care of the rivers. Unfortunately, many of the
contemporary urban places are evolving to make major perils to the rivers and its
riverine ecosystem.
The river Naika, passing through Tangla is currently suffering from the ominous
consequences of on going human activities in Tangla and its surrounding areas.

3. OBJECTIVE:
To find out the solution for
improvising the ailment of the
of Naika river with reference to
the biodiversity of the riverine
ecosystem.
To up rise a balance between
the urban development and the
riverine ecosystem of Naika.
To encourage the people to
come up with ideas, techniques
and suggestions to diminish
waste disposal in Naika river.

4. The Nuisances
 With the continuous rise of population the need for resources also have increased
considerably. As a result, the production of waste has gone up to a large extent. This
has made it necessary to improvise and upgrade the waste management system to
get rid from this serious issue.
 During monsoon, the river Naika is observed to be high on current and its water level
rises to about 8 feet flooding the adjacent streets and residential areas. This causes
the waste materials on its bank to flush away making the river dirty.
 Flooding on the banks of the river causes erosion of soil and subsequently the river
bed is rising silently.
 Due to the poor water quality, the local people who could earlier utilize the water from
this river for their daily uses, are now afraid of using the water as they reported to
suffer from itching and other skin infection in contact with this water.

5. Atrocities
 Throwing waste materials into the
river has divested the water quality
of the river.
 Faults and negligence of the
drainage system from the
residential areas outlets all the
wastes from homes directly into the
river.
 The jeopardized construction of
bridges and other infrastructures
along the river side has led to mix
huge amount of sand, cement and
other construction materials to the
river water.

6. Sewage, garbage and waste from households, shops etc. are dumped
into rivers at very large scale. These wastes contain many chemicals
and poisonous substances which are very harmful to plants and
animals dependent on the river water and living in it.

7. Our Division Courses of the
river
Width of the
river
Depth of the river Water level during
monsoon
Available aquatic
species
Upper Middle
Course
Sastrapara to
Pacchim Nalbari 8-9 mts 3-4 feet 3 feet
Catfish, Wallago
attu, Labeo, Catla
Middle Course Pacchim Nalbari
to Jalukbari 11 mts 4 feet 5 feet
Catfish, Wallago
attu, Labeo, Catla
Lower Middle
Course
Jalukbari to
Babupara 7-8 mts 4 feet > 7 feet
Pool barb, Labeo,
Wallago attu
Lower Course Babupara to
Tokankata
8-9 mts 7 mts > 6 feet Small fishes
CHARACTERISTICS OF NAIKA RIVER

8. CHARACTERISTICS OF NAIKA RIVER
 The river originates from Kachubil Tea Esate near Paneri
 The river flows through Paneri, Sastrapara, Jalukbari, Tangla and
Tokankata covering a distance of approximately 16 kms.
 At Tokankata river Naika recieves a tributary “Hurduma” (slightly
smaller in size than Naika) and finally flows to fall in to river Nonai,
which is roughly fouir times larger in size than Naika.
 After that they move together towards south up to Mangladoi and fall in
to mighty Brahmaputra.

9. A View of Naika flowing through Tokankata

10. REMEDIAL MEASURERS
 Digging down silt settled at the river bed.
 Installing proper waste disposal system all across the residential areas near the
river bank.
 Setting up guard walls along the river laterals.
 Improvisation and upgradation of the faulty drainage system.

11. OUTCOMES
 Minimization of river bank erosion of Naika river is a prime need.
 Protection of the surrounding residential area of the river Naika from
calamities like flood is necessary.
 To protect the riverine ecosystem that presides in the Naika river.
 To improve the water quality so that it becomes suitable for human use.
 To keep the biodiversity of the river ecosystem in a manner so that the
aquatic life forms can survive in the river.

12. Acknowledgement
Special thanks to Sir Tirthankar Choudhury for his advise during the entire field work.
We offer our gratitude to the guide teacher Sir Dhrubajyoti Sarmah.
We are thankful to our Principal sir for his encouragement.